Shutter-worker.



' PATENTBD JUNE 30, 1903-:

No. 732,393.. Y

A. M. BURNHAM. SHUTTER WORKER. APPLICATION FILED MAY 5} 1902.

2 SHEETS-SHEET 1.

N0 MODEL.

No. 732,393. PATENTED JUNBBO, 1903.. A. MJ BURNHAM. SHUTTER WORKER.

APPLICATION rum) MAY 5. i902.

' 2 SHEETS-SHEET 2 HOMODBL.

mwsasea. g Patented June so, 1903. UNITED STATES. PATENT OFFICE.

ARTHUR M. BURNIIAM, OF GARDINER, MAINE, ASSIGNOR OF ONE-HALF TO WILLIAM B. RAND, OF BOSTON, MASSACHUSETTS.

SHUTTER-WORKER.

"fiIEEGIFICATION forming part of Letters Patent No. 732,393, dated Junej30, 1903.

Application filed May 5, 1902. Serial No. 106.041. (liq model.) I

w/wm/ it y 007L067! jeoting some distance into tubular extension Be it known that I, ARTHUR M. BURNHAM, 6 to provide along rigid bearing for the shaft a resident of Gardiner, in the county of Kenand permit of the adjustment of the tube 14 nebec and State of Maine, have invented cerin extension 6 to exactly fit window-frames of 5 5 tain new and useful Improvements in Shutvarying thickness by simply moving the tube ter-Vorkers; andI do hereby declare the fol- 14 farther into or drawing it outward from lowing to be a full, clear, and exact descripextension 6. tion of the invention, such as will enable The cornenblock 16 or other portion of the others skilled in the art to which it appertains window-trim is recessed, as shown, and has 6o to make and usethe same. mounted therein a double-grooved drum 17 My invention relates to an improvement in secured on shaft 13 and against the end of shutter-workers; and it consists in certain tube '14:. The intermediate or dividing bead novel features of construction and combinaor flange 18 of this drum is notched or retions and arrangements of parts, as will be cessed, as shown at 19, to permit a single cord 65 [5 more fully hereinafter described, and pointed to be passed through this notch 19 and be out in the claims. wound in opposite directions around the In the accompanying drawings, Figure 1 is drum -.sections, permitting 'a single cord to a view illustrating my improvements. Fig. take the place of two, as heretofore required. 2 is a view in horizontal section. Fig. 3 is a The ends of this cord 20 are passed over pul- 7o 20 view in section of easing 5. Fig. 4: illustrates leys 22, supported on a short shaft 23, mountthe double drum, and Fig. 5 is a modification. ed in the outer edge of corner-block 16 and 1 represents the outside window-cap, 2 the approximately in alinement with the axis of inside cap, and 3the window-casing, in which drum 17, and the ends of the cord extend the ordinary sashes are mounted in any welldown beside the window-trim to within con- 75 known manner. To the window-casing hinges venient reach of a person in the room and are 3 are secured and support an ordinary shutter provided with suitable rings or handholds 24 4 to be operated by myimprovements, as will to facilitate the operation of the apparatus now be set forth; to turn the shaft 13, Worm 11, and worm- 5 represents a metal casing, comprising two wheel 9 in either direction to open or close 80 members tightly secured together by screws, the shutter, as will now be explained.

as shown, and one of said members made with On the lowerprotruding angular end of a tubular extension 6, having inclined ribs 7 journal 10 a small bracket 25, having an anthereon to be driven intoan opening in the gular opening toreceive the journal, is fitted window-cap and held against withdrawal by and is held thereon by a pin 26, passed trans- -8 5 J 5 a screw 8, passed through a shoulder on the verselythronghthejournal belowthe bracket. casing 5 and into the window-cap. The outer end of bracket 25 is bifurcated to In casing 5 a horizontally-disposed wormreceive a long arm 26, which is hinged thereto wheel 9 is located and made with integral by a pin 27, passed through the bifurcated journals 10, supported in bearings in the end of thebracket and arm. The arm is pref- 9o casing, and one of said journals projecting erably ribbed to strengthen it and has prothrough the bottom of the casing and made vided on its outer end a downwardly-projectangular, as shown. ing lug 28 to enter an opening in a short link A worm 11 is supported in casing 5, mesh 29 and be secured against removal by a pin 30, ing with worm-wheel 9, and is provided at one and this link 29 is pivotally connected at its 5 end with a journal 12, revolubly supported in. other end to the top of shutter at by a pin 31,

a bearing in the casing, and is made with an this connection being preferably strength- I angular bore .to receive the angular outer end ened by a metal plate 32, secured to the shutof a shaft 13 and adapted to be turned thereby ter. j to transmit motion to the worm-wheel. This In operation when one end of cord 20 is I00 shaft 13 is mounted in an elongated tube 14, drawn down to turn drum 17 and shaft 13 the extending through the window-frame and proopposite end of the cord will be wound on the drum. The turning of shaft 13 turns worm 11 and transmits motion to worm-wheel 9 and journal 10, forming an integral portion thereof, and thereby swings arm 26 and, by means of link 29, connecting the outer end of the arm with the shutter, pulls the shutter to the position desired, where it is effectually locked until one end of the cord 20 is again drawn downward.

It will be seen that by hinging arm 26 to bracket 25 it enables the arm to be disconnected from the shutter at will by simply removing pin 30, thus permitting the shutter to be taken off its hinges and replaced, as oocasion may require. This hinged connection also insures the arms perfect operation regardless of the different are the shutter may move owing to its becoming sagged or from any other cause it does not move concentric with journal 10.

In Fig. 5 I have shown the shaft 13 extending through the trim and having drum 17 secured on its protruding end. A double pulley is secured to the trim by a staple 3i and the cord 20 passed over the pulley, the operation being precisely as above explained.

A great man y slight changes and alterations might be made in the general form and arran gem ent of parts described without departing from my invention; and hence I do not limit myself to the precise construction set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my inventiou.

Havin g fully described my inven tion, what I claim as new, and desire to secure by Letters Patent, is-

1. In a shutter-worker, the combination with a two-part casing constructed with an elongated sleeve, a worm-wheel and worm mounted in said casing, the worm being secured to one end of a shaft, a tubular shaftbearing adjust-ably secured in said elongated sleeve, a winding-pulley attached to the outer end of the worm-shaft, and means for impart ing motion from the worm-wheel to a shutter, substantially as set forth.

, 2. In a shutter-Worker, the combination with a worm-wheel to operate a shutter, of a shaft projecting into the Window-casing, a Worm on the shaft to engage the worm-wheel, a double drum on the shaft having its intermediate bead or flange notched, and a single cord passed into said notch and wound in opposite directions around the drum.

In a shutterworker, a metal casing adapted to have a worm-wheel and worm mounted therein, said casing made in two sections, one section being formed with a shoulder, an elongated sleeve provided with exterior longitudinal ribs, and with a perforated flange, substantially as set forth.

4. In a shutter-Worker, the combination with a casing provided with an elongated sleeve, a tubular shaft-bearing adjustable endwise in said sleeve, of a worm shaft mounted in the tubular shaft-bearing and a pulley attached to one end of the shaft, substantially as set forth.

5. In a sluitter-worker, the combination with a wheel, means for rotating it, and a bracket secured to the axle of the wheel, of an arm hinged at one end to the bracket and connected at its outer end to a shutter, substantially as set forth.

6. In a shutter-worker, the combination with a wheel mounted. to rotate and means for turning the same, of a bracket connected with said wheel, an arm hinged to said bracket, a lug on the outer end of the arm, a link pivotally connected at one end to a shutter, and having a hole in its opposite end to receive said lug, and a pin to lock the lug in the link.

I11 testimony whereof I have signed this specification in the presence of two subscrilr ing witnesses.

ARTHUR M. BURNHAM.

Vitnesses:

S. W. FOSTER, R. S. FERGUSON. 

